Tobacco-pipe.



E. IRVING. TOBACCO PIPE.

' APPLICATION FILED NOV. 6, 19707.

Patented July 6, 1909.

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JOHN E. IRVING, Ol SAULT STE. MARIE, ONTARIO, (ANADA TOBACCO-PIPE.

Specification of Letters Patent.

Patented July 6, 1909.

Application filed November 6, 1907. Serial No. 400,912.

To all whom it may concern:

Be it known that I, JOHN EWART IRVING, a citizen of the Dominion ofCanada, residing at Sault Ste. Mario, in the Province of Ontario,Canada, have invented certain new and useful Improvements inTobacco-Pipes, of which the following is a specification.

My invention relates to tobacco pipes, and more particularly to pipes inwhich a tortuous passage is provided in the stem in order to inmrove thecharacter of the smoke.

The primary object of my invention is to provide an improved.construction of pipe stem of the above type which shall admit of readydisassembling of the parts for clean.- ing purposes.

A further object of my invention is to provide an improved form of pipebowl.

With the above and other objects in view, my invention consists in theconstruction and arrangement of parts hereinafter described, andillustrated in the accompanying drawings, in which:

Figure 1 is a central longitudinal section through my improved pipe,complete. Fig. 2 is a transverse section through the stem, taken on line2-2 of Fig. 1. Fig. 3 is a perspective view of one of the halves of myimproved smoke conduit.

Referring to the drawings in detail, 1. represents the pipe bowl, whichmay be of any usual or desired. construction, except as hereinafterspecified.

2 represents the stem or mouth-piece, provided with the usual bore orsmoke passage.

A tubular extension, 3 is formed integral with the bowl, and, togetherwith. the tubular extension 8, formed on the mo nth-piece, constitutesthe stem.

Fitted Within the stem is my improved smoke conduit. This comprises aplug, preferably cylindrical, composed of clay, cork, or other suitablematerial, and split longitudinally into two sections or halves 10 and.12. This plug abuts at one end against an annular shoulder 7, formed inthe bowl extension, and at the other end, against an annular shoulder 9,carried by the mouth-piece. Chambe 7 and 8 are thus formed. at each endof the plug. A plurality of channels are formed in the face of each halfor section, 10, 12, and so disposed that, when fitted together, a long,tortuous passage, or conduit, 11. is formed through the plug, having an.opening at each end. As shown, the conduit 11, comprises three passagesextending substantially the length of the plug, the outside passagescommunicating with the inner, at its opposite ends. By this arrangementthe smoke is caused to pass successively through all the passages, thusuoducing the same cooling effect as would a long stem. The plug is heldin position merely by frictional engagement with the parts of the stem,and it will thus be seen that, by removing the mouth-piece, the plug maybe readily slipped out, and the two halves separated. By thisconstruction ready access may be had to the smoke passages for cleaning.ll the plug were made in. one piece, it is evident that the passagescould not be satisfactorily cleaned, on account of the bends and anglesoccurring therein. It will be observed that the plug also serves as ameans for holding the two parts of the pipe together, the projecting endconstituting a nipple on which the mouth piece is fitted.

From the chamber 7 extends a drip-chamber 5. A smoke-passage l alsoconnects the chamber 7 with the bowl. I have discovered that it ispreferable to shape the bowl as shown in the drawing. The noveltyconsists in forming, at the bottom of the bowl a pit, 6, of smallerdiameter than the bowl, and having substantially vertical walls,connected with the walls of the bowl by means of a rounded shoulder 6.The smoke passage l, taps the pit 6 just below this shoulder 6, and Ihave found that by this construction, the passage l is very much lessliable to become clogged, than in the ordinary arrangement.

It will thus be seen that l have provided a very simple and practicalpipe, and it is thought the advantages thereof will be read ilyrecognized by those skilled in the art.

While I have shown and described my improved smoke conduit as composedof two sections or halves, it is of course obvious that three or moresections may be employed if desired, without in any way departing fromthe spirit of the invention.

What I claim is:-

1. In a pipe, a bowl having a tubular extension, a mouthpiece alsohaving a tubular extension. of substantially the same size, and a plugover which said tubular extensions are fitted so that their edges are incontact and in such manner as to wholly inclose said plug and form but asingle external joint, said plug having a smoke passage extendingthrough the same, and being split longitudi nally into sections,whereby, when said plug is removed, and the sections separated, readyaccess may be had to said smoke passage for cleaning.

2. In a pipe, a bowl having its lower portion contracted and terminatingin a pit of less diameter than the bowl, the walls of said pit and bowlmerging into each other and forming an annular shoulder around the upperedge 01' said pit, and a smoke passage tap- 10 ping said pit near itsupper edge adjacent said shoulder, whereby accumulations may collect inthe bottom of said pit without clogging said smoke passage.

In testimony whereof I a'HiX my signature in presence of two witnesses.

JOHN E. IRVING.

Vitn esses EARL F. SAYERS, Gnonern M. CAIN.

